基于简化路网模型的城市实时路况监控方法

摘要

在城市实时路况监控中,因交叉路口延误时间的采集困难、计算模型复杂,导致路况判别失准.针对该问题,提出了一种基于简化路网模型的实时路况判别方法.该方法通过在道路通行数据采集时将各种类型的交叉口都抽象为一个节点,并将在交叉口的延误时间计入相连道路的通行时间,然后在监控时针对不同类型节点进行反推计算,获得普通道路、环道以及立交桥的路况状态,实现实时监控.最后通过对城市实时路况监控的仿真实验验证了方法的有效性.%In real-time city-traffic monitoring,due to the difficulty in collecting delay time at intersections and the complexity of the computational model of the intersection traffic,it is very difficult to judge the city-traffic accurately.In order to solve the problem,this paper proposed a real-time traffic discrimination method based on simplified network model.In this method,various intersections were abstracted to a node respectively and the delay time at an intersection was added to the travel time of the road connected to it.Then in real-time traffic monitoring,it calculated the traffic state of ordinary roads,roundabouts and overpasses to achieve real-time monitoring of the traffic.Finally,it gave a simulation experiment of real-time city-traffic monitoring to prove its validity.